 The plan to build a treatment plant on the bank near the Belgrade Fair which would detoxicate the sludge and produce fertilizer from it was scrapped due to the high costs.For now, the silt is being dredged and vegetation cut just enough to make it navigable for the small boats in the marina.As a result of collection waste from farming households in its upper course, illegal housing and untreated industrial wastewater from the Rakovica industrial region, the mouth of the Topčiderka into the Sava was described by the environmentalists in March 2019 as the "open concrete (waste) collector".